Man, Craigslist has been awesome for me.
I've landed half of my clients from it and they've spread my name to people they know.
First two jobs on CL that I did landed me about $3,000 in work not to mention that they still come back to me. I estimate that 60% of my gross last year was from CL customers, have had a couple people wanting work for next to nothing but you're going to get that anyway. I'd say I've closed on 75% of the estimates that I've done on CL, definitely going to keep using it.